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US 12,247,637 B2Granted
Fluid-damped valve
AssigneeAirSpayce Pty Ltd
InventorMichael Charles Harvey McCauley
Life of this patent
Estimating the term…
Abstract
A fluid-damped valve comprises a body defining an internal cavity having an inlet for ingress of a fluid and an outlet for egress of the fluid, and a closure member having a narrowed end portion. The closure member is movably disposed within the internal cavity intermediate the fluid inlet and the fluid outlet. The valve includes a seat configured to sealingly receive the closure member. The seat defines a constricted portion of the internal cavity configured to non-sealingly receive the narrowed end portion and damp the flow of the fluid through the fluid-damped valve.
Claims19
A fluid-damped valve comprising:
- a valve body configured to form an inlet for ingress of a fluid and an outlet for egress of the fluid, and an internal cavity which provides an internal flow path configured to allow fluid to flow through the valve body;
- a reciprocating closure member which is movably disposed in the internal cavity moveable between a valve-closed position that shuts off fluid flow through the internal flow path, and a valve-open position that permits fluid to flow through the valve body from the inlet to the outlet, the reciprocating closure member having a main closure body portion and a narrowed end portion extending away from the main closure body portion towards the inlet;
- the valve body comprising a valve seat configured to sealingly contact the reciprocating closure member and form a barrier to fluid flow through the internal flow path from the inlet to the outlet when the reciprocating closure member is in the valve-closed position, the internal cavity comprising;
- a constricted cavity part adjacent to the inlet and upstream of the valve seat which is configured to have a width that non-sealingly receives the narrowed end portion, a damping fluid cavity part downstream of the valve seat configured to have a width greater than the constricted cavity part and to provide a close fitting clearance fit between the main closure body portion and the valve body, when the main closure body portion is at least partially within the damping fluid cavity part, and a valve open cavity part between the damping fluid cavity part and the outlet configured to have a width greater than the damping fluid cavity part and permit fluid to flow past the main closure body portion, between the main closure body portion and the valve body, in the valve open position, wherein as the reciprocating closure member moves from the valve-open position to the valve-closed position, the main closure body portion moves from the valve open cavity part into the damping fluid cavity part and the narrowed end portion moves into the constricted cavity part, where the narrowed end portion restricts fluid flow and damps the movement of the reciprocating closure member towards the valve seat.
1 more element
A fluid-damped valve comprising:
- a valve body configured to form an inlet for ingress of a fluid and an outlet for egress of the fluid, and an internal cavity which provides an internal flow path configured to allow fluid to flow through the valve body;
- a reciprocating closure member which is movably disposed in the internal cavity moveable between a valve-closed position that shuts off fluid flow through the internal flow path, and a valve-open position that permits fluid to flow through the valve body from the inlet to the outlet, the reciprocating closure member having a main closure body portion and a narrowed end portion extending away from the main closure body portion towards the inlet;
- the valve body comprising a valve seat configured to sealingly contact the reciprocating closure member and form a barrier to fluid flow through the internal flow path from the inlet to the outlet when the reciprocating closure member is in the valve-closed position, the internal cavity comprising:
- a constricted cavity part adjacent to the inlet and upstream of the valve seat which is configured to have a width that non-sealingly receives the narrowed end portion, a damping fluid cavity part downstream of the valve seat configured to have a width greater than the constricted cavity part and to provide a close fitting clearance fit between the main closure body portion and the valve body, when the main closure body portion is at least partially within the damping fluid cavity part, and a valve open cavity part between the damping fluid cavity part and the outlet configured to provide a greater clearance between the main closure body portion and the valve body than that provided by the damping fluid cavity part to thereby permit fluid to flow past the main closure body portion, between the main closure body portion and the valve body, when the valve member is in the valve open position, wherein as the reciprocating closure member moves from the valve-open position to the valve-closed position, the main closure body portion moves from the valve open cavity part into the damping fluid cavity part and the narrowed end portion moves into the constricted cavity part, where the narrowed end portion restricts fluid flow and damps the movement of the reciprocating closure member towards the valve seat.
1 more element
Dependencies are inferred from the claim text.